As early as the time of the invasion, the Franks, Bavarians, and Visigoths, when investigating cases, began by an inquiry, and, previously to having recourse to trials before a judge, they examined witnesses on oath. Then, he who swore to the matter was believed, and acquitted accordingly. This system was no doubt flattering to human veracity, but, unfortunately, it gave rise to abuses; which it was thought would be avoided by calling the family and friends of the accused to take an oath, and it was then administered by requiring them to place their hands on the crucifix, on some relics, or on the consecrated Host. These witnesses, who were called _conjuratores_, came to attest before the judges not the fact itself, but the veracity of the person who invoked their testimony. [Illustration: Fig. 300.--The Judicial Duel. The Plaintiff opening his Case before the Judge.--Fac-simile of a Miniature in the "Cérémonies des Gages des Batailles," Manuscript of the Fifteenth Century in the National Library of Paris.] The number and respectability of the _conjuratores_ varied according to the importance of the case in dispute. Gregory of Tours relates, that King Gontran being suspicious as to the legitimacy of the child who afterwards became Clotaire II., his mother, Frédégonde, called in the impartial testimony of certain nobles. These, to the number of three hundred, with three bishops at their head (_tribus episcopis et trecentis viris optimis_), swore, or, as we say, made an affidavit, and the queen was declared innocent. The laws of the Burgundians and of the Anglians were more severe than those of the Germanic race, for they granted to the disputants trial by combat. After having employed the ordeal of red-hot iron, and of scalding water, the Franks adopted the judicial duel (Fig. 300). This was imposed first upon the disputing parties, then on the witnesses, and sometimes even on the judges themselves. Dating from the reign of the Emperor Otho the Great in 967, the judicial duel, which had been at first restricted to the most serious cases, was had recourse to in almost all suits that were brought before the courts. Neither women, old men, children, nor infirm persons were exempted. When a person could not himself fight he had to provide a champion, whose sole business was to take in hand the quarrels of others. [Illustration: Fig. 301.--Judicial Duel.--Combat of a Knight with a Dog.--Fac-simile of a Miniature in the Romance of "Macaire," of the Thirteenth Century (Library of the Arsenal of Paris).] Ecclesiastics were obliged, in the same maimer, to fight by deputy. The champion or substitute required, of course, to be paid beforehand. If the legend of the Dog of Montargis is to be believed, the judicial duel seems to have been resorted to even against an animal (Fig. 301).